Portland Maine and Casco Bay Weather
Overnight
35°F
Mostly Clear
5 mph N
Saturday
55°F
Sunny
0 to 5 mph SW
Saturday Night
40°F
Clear
0 to 5 mph W
Sunday
57°F
Sunny
0 to 5 mph W
Sunday Night
41°F
Mostly Clear
5 mph SW
Monday
62°F
Sunny
0 to 5 mph SW
Monday Night
40°F
Mostly Clear
5 to 10 mph NW
Tuesday
50°F
Sunny
5 to 10 mph N
Tuesday Night
34°F
Mostly Clear
5 to 10 mph N
Wednesday
50°F
Sunny
0 to 5 mph NE
Wednesday Night
39°F
Mostly Clear
5 mph SW
Thursday
57°F
Sunny
5 to 15 mph SW
Thursday Night
48°F
Mostly Clear
10 to 15 mph SW
Friday
62°F
Mostly Sunny
10 mph W
Marine weather for Portland, Casco Bay, Portland Harbor, South Portland, Cape Elizabeth, Portland Head Light, Falmouth, Falmouth Foreside, Cousins Island, Yarmouth, the Royal River, Freeport, South Freeport, the Harraseeket River, the New Meadows River, Harpswell, Orr's Island, Bailey Island, Peaks Island, Long Island, Great Diamond Island, Chebeague Island, Cliff Island, the Calendar Islands, Hussey Sound, Broad Sound, and the Fore River, Maine. Wind, tides, and conditions for sailing, boating, fishing, sea kayaking, paddleboarding, and windsurfing.